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Primary treatment
Water passes through fine filters of sand and ground coal to remove smaller waste particles Disinfection is the final step
Septic Tank
Location is Rural areas
Application is Smaller amounts of waste, such as single-residence
Parts - Tank, Leach Field
Environmental Advantages is no electricity needed
Environmental disadvantages is Manages small amounts of waste. Tank must be pumped out every 5-10 years
Sewage Treatment plant
Location is Urban or Suburban areas
Application is Large amounts of waste from many households and businesses
Parts - Primary, Secondary, Tertiary
Environmental Advantages is Manages wastes from urban areas some sludge can be used as fertilizer
Environmental disadvantages is Release of inorganic nutrients into waterways Sludge must be removed
The Nitrogen Cycle Steps ( Def)
1) Nitrogen Fixation - The process that converts nitrogen gas in the atmosphere (N2) into forms of nitrogen that producers can use.
2) Nitrification - The conversion of ammonia (NH4) into nitrite (NO2) and then into nitrates.
3)Nitrogen Assimilation - the process by which produces incorporate elements into their tissue.
4) Nitrogen Ammonification - the process by which fungal and bacteria decomposer breakdown the organic nitrogen.
5) Denitrification -The conversation of nitrite (NO3) in a series of steps into the gases nitrous oxide (NO2)
Carbon Cycle
Co2
Photosynthesis
Animal respiration
organic carbon
Decay organism
Dead organism waste products
Fossil fuel
plant respiration
Auto and factory emissions
phosphate cycle
Rocks containing Phosphate
Weathering
Incorporation into animals
Waste and decomposition
Plant uptake
phosphate reserve
Leaching
Note 
Flashcard (102)